package com.fanco.learn_datastruct_leetcode.designpattern.facade;

/**
 * @author qiaowang 2022/2/15
 * 描述
 */
public class Projector {
    private static Projector instance = new Projector();

    public static Projector getInstance() {
        return instance;
    }

    private Projector() {}

    public void on () {
        System.out.println(" Projector on");
    }

    public void off () {
        System.out.println(" Projector off");
    }

    public void projector () {
        System.out.println(" Projector 投影");
    }
}
